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GMR-GPS RADIO OPERATION
In addition to its Global Positioning System (GPS) features, the GMR-GPS unit also provides
General Mobile Radio Service (GMRS) capability as a hand-held radio transceiver. As a GMRS
transceiver, the unit permits radio operation with features such as Coded Tone Controlled Squelch
System (CTCSS), Voice-Operated Transmission (VOX), Dual Channel Scan and Key Lock capability.
But the most unique feature is its capability, while operating in concert with the GPS function, of
transmitting user location (coordinates), with user identification (ID code), to another GMR-GPS unit
operating on the same frequency channel and sub-code with a single press of a button. The
transceiver is operational in the RADIO + GPS and RDO ONLY modes; make sure the GMRS
antenna is deployed for optimum radio operation.
RADIO CONTROLS
Power On/Off/Mark ( /M) Button (14)
Press and hold the power On/Off/Mark ( / M ) button
for at least 2 seconds. You will hear a confirming melody
to indicate the unit is on. To turn the unit off, press and
hold the button for at least 2 seconds.
Adjusting the Volume
With the unit powered on, and provided the GMR-GPS unit
is in the RDO ONLY or GPS + RADIO mode (standby page
displayed), toggle the Up/Downwheel key switch in the up position to increasevolume, or toggle
the wheel key switch in the down position to decrease volume. The volume display will indicate the
current volume level by means of a bar graph.
The Enter function is executed when the wheel key is pressed; this function is used to access
menus , confirm entries and/or edit certain radio and GPS functions.
Monitor (MON) Button (15)
This button is used to to check activity on the current frequency before transmitting. Check activity
by pressing the Monitor (MON) Button longer than 2 seconds; you will hear static if the frequency
is clear.
Do not transmit if you hear conversation.
Momentarily press the Monitor Button again
to exit the monitor function. If audio is received, the icon will appear and reveal the strength of
the signal by virtue of the number of illuminated bars.
The monitor function will temporarily bypass the squelch setting and play all signals on a given
channel. This feature is useful when communicating with other parties at extreme range.
Push To Talk (PTT) Button (1)
Pressing and holding this button will allow you to speak to any transceiver that is set to the same
channel and privacy code setting as yours. Hold the transceiver approximately 1 to 2 inches from
your face as you speak into the built in microphone . After you have finished speaking, release the
PTT Button to allow reception of incoming signals. It is not possible to transmit and receive at the
same time. The TX icon alongside the LCD Panel (13) will be highlighted while the PTT button is
pressed.
TRANSCEIVER
ANTENNA
DEPLOYMENT